[Freedreno] [[RFC]DPU PATCH 2/2] dt-bindings: drm/bridge: Document sn65dsi86 bridge bindings

[Sandeep Panda]

Document the bindings used for the sn65dsi86 DSI to eDP bridge.

Signed-off-by: Sandeep Panda <spanda at codeaurora.org>
---
 .../bindings/display/bridge/ti,sn65dsi86.txt       | 75 ++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/bridge/ti,sn65dsi86.txt

diff --git a/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi86.txt b/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi86.txt
new file mode 100644
index 0000000..cbd2f0e
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi86.txt
@@ -0,0 +1,75 @@
+SN65DSI86 DSI to eDP bridge chip
+--------------------------------
+
+This is the binding for Texas Instruments SN65DSI86 bridge.
+
+Required properties:
+- compatible: Must be "ti,sn65dsi86"
+- reg: i2c address of the chip, 0x2d as per datasheet
+- enable-gpios: OF device-tree gpio specification for EDP_BRIJ_EN pin
+- aux-sda-gpios: OF device-tree gpio specification for EDP_BRIJ_I2C_SDA pin of AUX channel
+- aux-scl-gpios: OF device-tree gpio specification for EDP_BRIJ_I2C_SCL pin of AUX channel
+- bias-en-gpios: OF device-tree gpio specification for EN_PP3300_DX_EDP pin to
+			enable 3.3V supply to eDP connector
+- bklt-en-gpios: OF device-tree gpio specification for AP_EDP_BKLTEN pin
+
+- vccio-supply: A 1.8V supply that powers up the PHY.
+- vcca-supply: A 1.2V supply that powers up the Controller.
+- vccs-supply: A 3.3V supply that power the eDP connector
+
+Optional properties:
+
+- irq-gpios: OF device-tree gpio specification for interrupt pin
+- bklt-ctrl-gpios: OF device-tree gpio specification for EDP_BKLTCTL pin
+
+- sn,is-pluggable: boolean property to specify if HPD supported or not
+- sn,custom-modes: OF device-tree specifiction to add support for custom modes
+
+Required nodes:
+
+This device has two video ports. Their connections are modelled using the OF
+graph bindings specified in Documentation/devicetree/bindings/graph.txt.
+
+- Video port 0 for DSI input
+- Video port 1 for eDP output
+
+Example
+-------
+
+edp-bridge at 2d {
+	compatible = "ti,sn65dsi86";
+	#address-cells = <1>;
+	#size-cells = <0>;
+	reg = <0x2d>;
+
+	enable-gpios = <&msmgpio 33 GPIO_ACTIVE_HIGH>;
+	aux-sda-gpios = <&msmgpio 34 GPIO_ACTIVE_HIGH>;
+	aux-scl-gpios = <&msmgpio 35 GPIO_ACTIVE_HIGH>;
+	bias-en-gpios = <&msmgpio 36 GPIO_ACTIVE_HIGH>;
+	bklt-en-gpios = <&msmgpio 37 GPIO_ACTIVE_HIGH>;
+
+	vccio-supply = <&pm8916_l17>;
+	vcca-supply = <&pm8916_l6>;
+	vccs-supply = <&pm8916_l7>;
+
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		port at 0 {
+			reg = <0>;
+
+			edp_bridge_in: endpoint {
+				remote-endpoint = <&dsi_out>;
+			};
+		};
+
+		port at 1 {
+			reg = <1>;
+
+			edp_bridge_out: endpoint {
+				remote-endpoint = <&edp_panel_in>;
+			};
+		};
+	};
+}
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